Extrinsic 109120-1

{
  "heartbeat": {
    "blockNumber": 109119,
    "sessionIndex": 1818,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x86cfddb2cfaaec6ea62e87fc39d17f53a6cfc69b51704e057832decdc18b8c01ded49914d8bff935c755d4752bc29a037acc54e011aab3cd2ca85dec09629587"
}